How does s2Member know when to demote a paid Member to a Free Subscriber?
s2Member uses its built-in Auto-EOT System ( new ). EOT = End Of Term. Whenever you generate a PayPal® Button with s2Member, you’ll configure a length for the Subscription. Depending on the type of Subscription you choose ( recurring, non-recurring, lifetime, or fixed-term ); s2Member will either use PayPal’s IPN/subscr_payment,subscr_cancel,subscr_eot notices, or it will set an Automatic EOT Time, which is processed automatically by s2Member via WP_Cron. For each Member, you can also override the EOT Time, by forcing a specific expiration date. To manually adjust the EOT Time for a specific Member, go to: WordPress® -> Users, and click the Edit link next the Member you want to work on.